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fix several sync issues. improve performance a bit by removing ds from first sync step

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This commit is contained in:
Kevin Jahns
2017-06-29 15:04:36 -07:00
parent 409a9414f1
commit a64730e651
3 changed files with 69 additions and 49 deletions
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97
src/Connector.js
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@@ -59,7 +59,6 @@ export default function extendConnector (Y/* :any */) {
this.syncingClients = []
this.forwardToSyncingClients = opts.forwardToSyncingClients !== false
this.debug = opts.debug === true
this.syncStep2 = Promise.resolve()
this.broadcastOpBuffer = []
this.protocolVersion = 11
this.authInfo = opts.auth || null
@@ -146,6 +145,9 @@ export default function extendConnector (Y/* :any */) {
isSynced: false,
role: role
}
let defer = {}
defer.promise = new Promise(function (resolve) { defer.resolve = resolve })
this.connections[user].syncStep2 = defer
for (var f of this.userEventListeners) {
f({
action: 'userJoined',
@@ -187,7 +189,7 @@ export default function extendConnector (Y/* :any */) {
var answer = {
type: 'sync step 1',
stateSet: stateSet,
deleteSet: deleteSet,
// deleteSet: deleteSet,
protocolVersion: conn.protocolVersion,
auth: conn.authInfo
}
@@ -289,51 +291,59 @@ export default function extendConnector (Y/* :any */) {
if (message.type === 'sync step 1' && canRead(auth)) {
let conn = this
let m = message
let wait // wait for sync step 2 to complete
if (this.role === 'slave') {
wait = Promise.all(Object.keys(this.connections)
.map(uid => this.connections[uid])
.filter(conn => conn.role === 'master')
.map(conn => conn.syncStep2.promise)
)
} else {
wait = Promise.resolve()
}
wait.then(() => {
this.y.db.requestTransaction(function * () {
var currentStateSet = yield * this.getStateSet()
// TODO: remove
// if (canWrite(auth)) {
// yield * this.applyDeleteSet(m.deleteSet)
// }
this.y.db.requestTransaction(function * () {
var currentStateSet = yield * this.getStateSet()
if (canWrite(auth)) {
yield * this.applyDeleteSet(m.deleteSet)
}
var ds = yield * this.getDeleteSet()
var answer = {
type: 'sync step 2',
stateSet: currentStateSet,
deleteSet: ds,
protocolVersion: this.protocolVersion,
auth: this.authInfo
}
if (message.preferUntransformed === true && Object.keys(m.stateSet).length === 0) {
answer.osUntransformed = yield * this.getOperationsUntransformed()
} else {
answer.os = yield * this.getOperations(m.stateSet)
}
conn.send(sender, answer)
if (this.forwardToSyncingClients) {
conn.syncingClients.push(sender)
setTimeout(function () {
conn.syncingClients = conn.syncingClients.filter(function (cli) {
return cli !== sender
})
var ds = yield * this.getDeleteSet()
var answer = {
type: 'sync step 2',
stateSet: currentStateSet,
deleteSet: ds,
protocolVersion: this.protocolVersion,
auth: this.authInfo
}
if (message.preferUntransformed === true && Object.keys(m.stateSet).length === 0) {
answer.osUntransformed = yield * this.getOperationsUntransformed()
} else {
answer.os = yield * this.getOperations(m.stateSet)
}
conn.send(sender, answer)
if (this.forwardToSyncingClients) {
conn.syncingClients.push(sender)
setTimeout(function () {
conn.syncingClients = conn.syncingClients.filter(function (cli) {
return cli !== sender
})
conn.send(sender, {
type: 'sync done'
})
}, 5000) // TODO: conn.syncingClientDuration)
} else {
conn.send(sender, {
type: 'sync done'
})
}, 5000) // TODO: conn.syncingClientDuration)
} else {
conn.send(sender, {
type: 'sync done'
})
}
}
})
})
} else if (message.type === 'sync step 2' && canWrite(auth)) {
var db = this.y.db
var defer = {}
defer.promise = new Promise(function (resolve) {
defer.resolve = resolve
})
this.syncStep2 = defer.promise
let m /* :MessageSyncStep2 */ = message
let defer = this.connections[sender].syncStep2
let m = message
// apply operations first
db.requestTransaction(function * () {
yield * this.applyDeleteSet(m.deleteSet)
@@ -344,18 +354,17 @@ export default function extendConnector (Y/* :any */) {
}
defer.resolve()
})
/*
then apply ds
/*/ then apply ds
db.whenTransactionsFinished().then(() => {
db.requestTransaction(function * () {
yield * this.applyDeleteSet(m.deleteSet)
})
defer.resolve()
})*/
return this.syncStep2
return defer.promise
} else if (message.type === 'sync done') {
var self = this
this.syncStep2.then(function () {
this.connections[sender].syncStep2.promise.then(function () {
self._setSyncedWith(sender)
})
} else if (message.type === 'update' && canWrite(auth)) {